JP2008140685A - Image display apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an image display apparatus capable of securely fixing a base and suppressing the distortion in an electric field caused by a bonding member. <P>SOLUTION: The image display apparatus is equipped with a front panel (21) having on one side an anode (15), a fluorescent substance (12), and a black matrix (13); a back board (22) having a plurality of electronic sources (5) on one side and arranged opposite to the front panel; a supporting frame (3) interposed between one side in the front panel and one side in the back board to hermetically seal the outer periphery of the display area in the front panel; and a plurality of bases 4 interposed between the front panel and the back board. Each of bonding members is bonded in a broadening manner towards the end to fix between one end of the base and one side of the front panel, and between another end of the base and one side of the back board. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to an image display device including a plurality of electron sources and a phosphor.

  A matrix-type image display device (matrix-type display) can display an image by adjusting a voltage applied to each pixel by using a pixel near the intersection of mutually orthogonal electrode groups. As the matrix type image display device, a field emission display (hereinafter referred to as FED), an electroluminescence display (EL), a light emitting diode display (LED) and the like are known in addition to a liquid crystal display. For example, in the FED, an electron emission source (cold cathode source) is arranged for each pixel, electrons are emitted from the electron emission source, accelerated in vacuum, and then irradiated on the phosphor to cause the irradiated phosphor to emit light. Is. That is, the FED has a configuration in which an anode substrate (front substrate) having a phosphor layer and a cathode substrate (back substrate) having an electron emission source are bonded and hermetically sealed at an interval of 0.5 mm or more. The sealed space between the two substrates is set to a pressure lower than the atmospheric pressure or a vacuum state. Further, as electron emission elements for FED, field emission type elements using Spindt type or carbon nanotubes, metal / insulating layer / metal type emission elements (MIM elements), surface conduction type elements and the like are known.

  Further, Patent Document 1 discloses that a front frame, a rear substrate, a support frame that is between the front substrate and the rear substrate, and supports the periphery of the display area, and a space interposed between the front substrate and the rear substrate. -A support (support), a junction between the front substrate and the spacer, a junction between the rear substrate and the spacer, a junction between the front substrate and the support frame, and a connection between the rear substrate and the support frame. An image display device is disclosed in which a panel (assembled container) is formed by bonding frit glass to a bonding portion. This image display apparatus is configured such that electrons are emitted from each cold cathode element by applying a voltage to an electron emitting element (cold cathode source) formed on the rear substrate. Further, this image display device is configured such that by applying a high voltage of several kV introduced from outside the container to the metal back (anode) portion of the front substrate, the emitted electrons are accelerated and collide with the front substrate. The phosphors of the respective colors on the front substrate are excited by the accelerated electrons and emit light to display an image.

  Further, the spacer that supports the front substrate and the rear substrate is required to satisfy the following items mechanically and electrically. That is, sufficient mechanical strength is required to hold the front substrate and the back substrate inside the display device at a uniform interval against the atmospheric pressure atmosphere outside the image display device. In addition, electrical characteristics that minimize the electric field distortion of electrons between the front substrate and the back substrate due to the presence of the spacer and do not affect the trajectory of electrons emitted from the cold cathode source are required. The In addition, it is necessary to suppress electric field concentration around the spacer due to electric field distortion and local discharge.

  Regarding mechanical strength, Patent Document 2 discloses a technique for improving the fixing strength of a spacer by adhering non-conductive frit glass to a terminal portion of a substantially rectangular parallelepiped spacer. Patent Document 3 discloses a technique for securing a large contact area with a frit glass bonded to a spacer by providing a chamfered portion at a corner of the spacer. According to this, the fixing of the spacer is ensured and the parallelism between the front substrate and the rear substrate is maintained.

Further, in Patent Document 4, in the front substrate and the rear substrate, electrode walls are provided on the left and right sides of the spacer, a gap is formed between the left and right walls, and the spacer is fixed to the valley portion. A technique for suppressing electric field distortion is disclosed. Further, in Patent Document 5, in view of the fact that the adhesive for bonding the spacer and the substrate is carbonized in the high-temperature oven in the post-bonding process, causing gas discharge and causing discharge, A technique is disclosed in which frit glass, which is an agent, is welded and fixed with a laser to achieve assembly instantaneously. According to this technique, the amount of adhesive used can be greatly reduced, gas emission due to carbonization in the oven process can be minimized, and internal discharge (local discharge) can be prevented.
JP-A-11-317164 JP-A-10-144203 JP 2006-164684 A Japanese Patent No. 3466870 JP 2000-133131 A

The image display device described in Patent Document 1 is ideally an equal state in which the accelerating electric field is not distorted in order to allow electrons emitted from the rear substrate to reach a desired phosphor on the front substrate that faces the image display device. .
However, since normal frit glass has high viscosity, electric field distortion due to the frit glass shape that fixes the upper and lower ends of the spacer is large. In other words, the electric field is distorted by the charging of the frit glass and the spacer, and the electrons deviate from the normal linear trajectory. In particular, the deviation of the trajectory around the spacer in the vicinity of the back substrate where the electron velocity is insufficient is remarkable. For this reason, electrons cannot reach a desired phosphor position on the front substrate, and a non-light-emitting portion occurs in the image around the spacer, or light emission unevenness occurs.
In addition, the electric field distortion depending on the bonding shape of the frit glass becomes obvious, leading to a local high electric field, and eventually leading to a local discharge, so that it does not function as an image display device.
Also, depending on the bonding shape of the frit glass (adhesive member), the spacer may fall over when firing in the assembly process or when vacuum sealing the front substrate, rear substrate, support frame, and spacer (support). Was a problem.

  SUMMARY OF THE INVENTION An object of the present invention is to provide an image display device capable of ensuring fixing of a support and suppressing electric field distortion caused by an adhesive member.

  In order to solve the above problems, an image display device of the present invention includes a front plate having an anode, a phosphor, and a black matrix on one side, and a back plate having a plurality of electron sources on one side and facing the front plate. A support frame interposed between the one side of the front plate and the one side of the back plate and hermetically sealing the outer periphery of the display area of the front plate, and between the front plate and the back plate An image display device comprising: a plurality of support members interposed between the one end surface of the support member and the one surface of the front plate; and the other end surface of the support member and the back plate. Adhesive members that adhere to one side are each bonded and fixed in a divergent shape.

  According to this, since the adhesive member and the support are bonded in a divergent shape, the rigidity of the adhesive member is small. For this reason, even if a support body is pressed and elastically compressed, there are few cracks of a joining member. As a result, the fixing of the support is ensured, and the support does not fall over even during vacuum sealing. Further, since the adhesive member is bonded in a divergent shape, it approximates the surface shape of the front plate or the back plate and the support and has less electric field distortion.

  ADVANTAGE OF THE INVENTION According to this invention, while fixing a support body reliably, the electric field distortion by an adhesive member can be suppressed.

(First embodiment)
FIG. 1 is a three-dimensional schematic diagram of an image display apparatus according to an embodiment of the present invention, and shows a part of the internal structure of the display apparatus.
The image display apparatus 100 includes a front substrate 1, a rear substrate 2, a support frame 3, a spacer 4 that is a support, a frit glass 8 that is an adhesive member that bonds the spacer 4 and the rear substrate 2, a scanning line 10, and a data line 11. , A phosphor 12, a black matrix 13, and an anode lead line 14. Although not shown, frit glass is used for bonding the spacer 4, the front substrate 1, the support frame 3, and the rear substrate 2. The phosphor 12 and the black matrix 13 formed on the inner surface of the front substrate 1 schematically show a lattice pattern that can be seen over the front substrate 1. The direction of the scanning line 10 is the X direction, the direction of the data line 11 is the Y direction, and the thickness direction is the Z direction.

The back substrate 2 is preferably a glass plate or a ceramic plate, and is formed from an insulating substrate having a thickness of several millimeters. Further, the front substrate 1 is preferably a transparent glass plate, and is formed from a translucent substrate having a thickness of about several millimeters.
A support frame 3 that is inserted between the front substrate 1 and the rear substrate 2 and supports the peripheral edge of the display area is made of a glass plate or a frit glass molded product and also serves as an outer frame. The support frame 3 is bonded and fixed between the front substrate 1, the back substrate 2, and the support frame 3 using frit glass, and the distance between the front substrate 1 and the back substrate 2 is maintained at a predetermined size. .

  In addition, a plurality of spacers 4 are disposed between the two substrates, and the distance between the front substrate 1 and the rear substrate 2 is maintained at a predetermined size even at the center of the image display device 100. The spacer 4 is preferably erected on the scanning line 10 and is made of plate glass or ceramic having a thickness of about several hundred μm. For fixing the spacer 4 to the front substrate 1 and the rear substrate 2, frit glasses 7 and 8 are used as adhesive members.

The internal space of the image display device assembled by the front substrate 1, the rear substrate 2, the support frame 3, and the spacer 4 is sealed in a reduced pressure state or a vacuum state, and the internal space is usually 10 ⁻⁴ to 10 ⁻⁵ Pa. Is held to a degree. The scanning lines (gate electrodes) 11 and the data lines 11 (cathode electrodes) are arranged in a grid pattern, and an MIM-structured electron-emitting device 5 (FIG. 2) is formed in the vicinity of each intersection position.

  A high voltage lead wire 14 is connected to an electrode (anode electrode) formed on the inner surface of the front substrate 1. By applying a voltage of several kV to the anode lead wire 14, electrons emitted from the electron emitter 5 are accelerated by an electric field formed between the back substrate 2 and the front substrate 1 and collide with the phosphor 12. To do. As a result, the phosphor 12 emits light and an image is displayed over the front substrate 1.

FIG. 2 is a partial cross-sectional view in which a part of the II ′ cross section along the Y-axis direction in FIG. 1 is cut out.
In FIG. 2, the image display device 100 includes a front plate 21, a back plate 22, and a spacer 4 that supports and supports the front plate 21, the front plate 21, the back plate 22, and the spacer 4. , 8.
The front plate 21 includes a front substrate 1, a phosphor 12, a black matrix 13, and a metal back 15. The phosphor 12 and the black matrix 13 are formed on the surface of the front substrate 1, and the phosphor 12 and the black matrix. A metal back 15 is formed on the surface 13. The metal back 15 that is an anode is formed of an aluminum film (Al film), and is led out to the outside by an anode lead wire 14. The spacer 4 is metallized with a conductive film 16 to improve electrical conductivity when contacting the inner surface of the front substrate 1 and the inner surface of the rear substrate 2.

  The back plate 22 includes the back substrate 2, the data line 11, the insulating AO film (Al oxide film) 20, the SiN film 19, and the scanning line 10. The data lines 11 are arranged on the surface of the back substrate 2, the insulating AO film 20 is formed on the surface of the data lines 11, the SiN film 19 is formed on the surface of the insulating AO film 20, and the surface of the SiN film 19 is scanned. The line 10 is formed so as to be orthogonal to the data line 11. A metal 5 a connected to the scanning line 10 is formed on the surface of the insulating AO film 20 at a position away from the center line of the scanning line 10 by a predetermined distance d.

  The metal 5a, the insulating AO film 20 and the data line 11 form an electron-emitting device 5 having a MIM (metal-insulator-metal) structure, and a DC high voltage of several thousand volts is applied to the anode lead wire 14 connected to the anode. A scanning line voltage V1 (FIG. 3) that is a positive pulse voltage (for example, a pulse width of several tens of microseconds and a repetition interval of several tens of milliseconds) is applied to the metal 5a, and a data line voltage that is a negative pulse voltage When V2 (FIG. 3) is applied to the data line 11, electrons are emitted from the metal 5a by a tunnel phenomenon. Note that the data line voltage V2 is applied in order to remove the positively charged charges remaining due to the application of the scanning line voltage V1. Further, as the electron-emitting device 5, a surface conduction electron-emitting device, a diamond film, a graphite film, or a carbon nanotube may be used.

  Next, an adhesion structure between the spacer 4 and the frit glasses 7 and 8 will be described. FIG. 4 shows a cross section of the spacer 4, the frit glass 8, and the periphery of the back substrate 2 of FIG. 4 (a), 4 (b), and 4 (c) show that the wetting angle θ between the spacer 4 and the frit glass 8 is θ = 90 °, 45 °, respectively, with respect to the adhesive shape of the frit glass 8. It is a schematic diagram at the time of making it 0 degree. Note that θ = 45 ° is a virtual shape, and the conductive film 16 is not shown. Further, the shape of FIG. 4A has better wettability of the frit glasses 7 and 8 than the shape of FIG.

FIG. 5 shows the electric field strength (kV / mm) at the interface between the spacer 4 and the frit glass 8 with respect to the frit glass shape of FIGS. 4 (a) to 4 (c). A broken line connects the electric field strengths. The volume resistivity ρ _f of the frit glass 8 was the same as the volume resistivity of the spacer 4.
FIG. 5 shows that the electric field strength decreases as the wetting angle θ increases. That is, by setting the wetting angle of the frit glass 8 shown in FIG. 4A and FIG. 4B to 45 ° or more, it can be adjusted to be equal to or less than the discharge start electric field that causes local discharge. The volume resistivity ρ _f of the frit glass 8 at this time is preferably 10 ⁵ to 10 ¹² Ωcm.

  Further, by setting the wetting angle to 45 ° or more, the buckling strength of the spacer 4 and the frit glass 8 is improved as compared with FIG. 4C, which is sufficient to support the front substrate 1 and the back substrate 2. Mechanical strength. In other words, since the elastic coefficients of the spacer 4 and the frit glass 8 are different, when the spacer 4 is pressed in the shape of FIG. 4C, a difference in compressive strain occurs at the boundary surface between the spacer 4 and the frit glass 8. Then, the frit glass 8 is cracked. On the other hand, in the shape of FIG. 4A, the rigidity at the tip of the frit glass 8 is small and cracking is difficult to occur.

The reason why the electric field strength is large or small with respect to the difference in the shape of the frit glass 8 will be described with reference to FIG.
6A and 6B show the spacer 4 and the frit in the vicinity of the back substrate 2 when the wetting angle is θ = 90 ° and θ = 0 °, respectively, as in FIG. 4A. The glass 8 is cut out and shown. The symbols “a” and “b” and the symbols “a ′” and “b ′” shown in the figure indicate both ends of the unit length ΔL on the surface of the frit glass 8. Further, the potential difference ΔV is a potential difference in the electric field direction between the unit lengths ΔL, and Δd1 and Δd2 are surface distances in the vertical direction with respect to the front substrate 1 and the rear substrate 2 between ΔL.

  Here, the electric field strength differences ΔE1 and ΔE2 in the unit length ΔL of FIGS. 6A and 6B are expressed by ΔEn = ΔV / Δdn (n is 1 or 2), and the magnitude of ΔEn is large or small. Changes the degree of electric field distortion. 6A and 6B, since Δd1> Δd2, ΔE1 <ΔE2, and as the wetting angle θ approximates 0 °, the electric field strength increases and the electric field distortion becomes remarkable. If a metal such as solder is formed in the shape of FIG. 6B, an equipotential surface is formed on the surface of the metal, and an electric field perpendicular to the metal surface is generated. In the present embodiment, the case where the lower end portion of the spacer 4 is bonded and fixed to the scanning line 10 formed on the inner surface of the back substrate 2 has been described. However, the upper end portion of the spacer 4 is formed on the inner surface of the front substrate 1. The same applies to the case of bonding to the metal back 15.

  As described above, according to the present embodiment, the shape of the frit glass 7, 8 that bonds the spacer 4 to the front substrate 1 and the rear substrate 2 is formed as a divergent shape that protrudes downward from the spacer 4 toward the substrate inner surface. By doing so, it becomes possible to improve the buckling strength of the support member composed of the spacer 4 and the frit glasses 7 and 8. In addition, by making the shape of the frit glasses 7 and 8 widen at an angle of 45 ° or more, electric field distortion at the tips of the spacer 4 and the frit glasses 7 and 8 can be suppressed. Electron deflection and local discharge are suppressed.

(Second Embodiment)
In the first embodiment, by keeping the wetting angle θ of the frit glasses 7 and 8 at 45 ° or more, it is possible to improve the buckling strength and to suppress the deviation of the electron trajectory and the local discharge by suppressing the electric field distortion. It showed that. In the present embodiment, the viscosity of the frit glasses 7 and 8 is lowered, the frit glasses 7 and 8 are bonded to the side surfaces of the spacers 4 substantially in parallel, the wetting angle θ is about 90 °, and the front substrate and the rear substrate. And the conductive material were made substantially parallel to ensure a bonding area.

FIG. 7 is a partial cross-sectional view of the spacer 4, frit glass 8, and back substrate 2 of FIG. 2. As shown in FIG. 7, in the present embodiment, the viscosity of the frit glass 8 is further lowered, and the frit glass 8 is bonded to the surfaces of the spacers 4 and the scanning lines 10 so as to be substantially L-shaped. This is a characteristic configuration. In addition, volume resistivity (rho) _f = 10 < ⁵ > -10 < ¹² > (omega _| ohm) cm is suitable. By doing so, the frit glass 8 can secure a bonding area with respect to the scanning line 10, so that a sufficient bonding strength (or buckling strength) is obtained, and the spacer 4 falls over during firing and vacuum sealing. The problem can be solved.

Further, since the frit glass 8 is applied substantially parallel to the spacer 4 (wetting up angle is approximately 90 °), the electric field distortion around the spacer can be reduced, the electron trajectory shift, and the occurrence of local discharge. The problem can be solved.
In the present embodiment, the case where the lower end portion of the spacer 4 is bonded and fixed to the scanning line 10 formed on the inner surface of the back substrate 2 has been described. However, the upper end portion of the spacer 4 is formed on the inner surface of the front substrate 1. The same applies to the case of bonding to the metal back 15.

  According to the present embodiment, by reducing the viscosity of the frit glasses 7 and 8, the wetting angle is about 90 °, that is, the frit glass is substantially L-shaped with respect to the spacer surface and the front substrate 1 and the back substrate 2. Therefore, the buckling strength of the support member composed of the spacer 4 and the frit glasses 7 and 8 can be improved. Further, since the wetting angle is approximately 90 °, electric field distortion at the periphery of the spacer, particularly at the wetting interface between the spacer 4 and the frit glass 7 and 8, can be reduced, and the occurrence of electron deflection and local discharge can be suppressed.

(Third embodiment)
In the second embodiment, the frit glasses 7 and 8 having reduced viscosity for bonding the spacer 4 to the front substrate 1 and the back substrate 2 have been described. However, the third embodiment is not limited to this, and the frit is not limited thereto. As an alternative to the glass 7 and 8, an adhesive material having a low viscosity is used. In addition, volume resistivity (rho) _f = 10 < ⁵ > -10 < ¹² > (omega _| ohm) cm is suitable. By setting it as such a form, the effect equivalent to the case of the frit glasses 7 and 8 shown in 2nd Embodiment is acquired, and the subject of invention can be overcome.

According to the third embodiment, by using an adhesive material having a volume resistivity ρ _f equivalent to that of the frit glass as an alternative to the frit glasses 7 and 8 having the reduced viscosity, the spacer 4 and the adhesive material are similarly used as described above. It is possible to improve the buckling strength of the support member consisting of Furthermore, since the wetting angle is approximately 90 °, electric field distortion at the periphery of the spacer, particularly at the wetting interface between the spacer 4 and the conductive material, can be reduced, and the occurrence of electron deflection and local discharge can be suppressed.

(Fourth embodiment)
FIG. 8 schematically shows the structure of the fourth embodiment of the present invention, and shows the periphery of the spacer 4, the frit glass 8, and the back substrate 2. The frit glass 7 is not shown. In the second and third embodiments, the spacer 4 and the metal back 15 formed on the inner surface of the front substrate 1, and the scanning line 10 formed on the inner surface of the rear substrate 2 and the frit glass having a low viscosity for adhesion, Alternatively, an adhesive material was used. In the present embodiment, a liquid reservoir is provided on both sides of the spacer side surface in parallel with the longitudinal direction of the spacer so that the low-viscosity frit glass and the adhesive material do not flow out in a wider range than necessary in the metal back 15 and the scanning line 10. For this reason, a groove portion 17 is provided.

By adopting such a configuration, in addition to the effects shown in the second and third embodiments, the frit glass 7, 8 or the adhesive material can be prevented from flowing out over a wide range, and the buckling strength can be maintained. It is possible to suppress the deviation of the orbit and the suppression of local discharge, and to prevent the frit glass or the conductive material from flowing out over a wide range of the front substrate and the rear substrate.
FIG. 8 shows the case where the lower end portion of the spacer 4 is bonded and fixed to the scanning line 10 formed on the inner surface of the back substrate 2, but the upper end portion of the spacer 4 is formed on the inner surface of the front substrate 1. The same applies when bonding to the metal back 15.

  According to the fourth embodiment, in the front substrate 1 and the rear substrate 2, the liquid reservoir groove portions 17 are provided on both sides of the spacer side surface in parallel with the spacer longitudinal direction, whereby the spacer 4 is adhered with a viscosity. When the adhesive material not limited to the frit glass is used, the frit glass 7 or 8 or the adhesive is adhered over a wide area in the vicinity of the spacer 4 of the front substrate 1 and the rear substrate 2 due to low viscosity. The material can be prevented from flowing out. With respect to fixing the front substrate 1 and the rear substrate 2 to the frit glass 7, 8 or the adhesive material, an adhesive area can be secured, and the buckling strength of the support member made of the spacer 4 and the frit glass 7, 8 or the adhesive material can be increased. It becomes possible to improve. In addition, since the wetting angle between the spacer and the frit glass or the adhesive material is approximately 90 °, the electric field distortion around the spacer, particularly the wetting interface between the spacer 4 and the frit glass 7, 8 or the adhesive material is reduced. It is possible to suppress the deviation of the electron trajectory and the occurrence of local discharge.

(Fifth embodiment)
In the fourth embodiment, the low-viscosity frit glasses 7 and 8 and the adhesive material on the substrates on both sides of the spacer 4 with respect to the longitudinal direction of the spacer so that the adhesive material does not flow out more than necessary in the front substrate 1 and the rear substrate 2. In parallel, a liquid reservoir groove 17 was provided. In the present embodiment, as shown in FIG. 9, the curved groove portion 18 is provided at a position where the spacers 4 of the front substrate 1 and the rear substrate 2 are arranged.

  The spacer 4 is placed while both corners of the lower end of the spacer are in linear contact with the groove 18. By using the frit glass 8 or an adhesive member made of an adhesive material in this state, the spacer 4 and the back substrate 2 are fixed, and the adhesive member can be prevented from flowing out over a wide range by the groove 18. Furthermore, since the groove portion 18 has a curved surface, the adhesive material wraps around the groove portion 18 and can adhere to the groove portion 18, so that it is possible to reinforce the spacer 4. Thereby, it is less likely that the spacer 4 falls.

  According to this embodiment, by providing the curved groove 18 in parallel with the longitudinal direction of the spacer 4 at the position where the spacer 4 of the front substrate 1 and the rear substrate 2 is arranged, the frit glass 7, 8 or bonding It is possible to prevent the material from flowing out to a wide range of the front substrate 1 and the back substrate 2. Further, since the frit glass 7, 8 or the adhesive material goes around the spacer surface by the curved groove 18 and is bonded to the spacer 4, the support member made of the spacer 4 and the frit glass 7, 8 or the adhesive material. It is possible to improve the buckling strength. Further, since the wetting angle between the spacer 4 and the frit glass 7 or 8 or the adhesive material is approximately 90 °, the electric field around the spacer, particularly the wetting interface between the spacer 4 and the frit glass 7 or 8 or the adhesive material. Distortion can be reduced, and deviation of electron trajectory and occurrence of local discharge can be suppressed.

1 is a three-dimensional schematic diagram of an image display apparatus according to an embodiment of the present invention. It is a fragmentary sectional view of the image display apparatus which is one Embodiment of this invention. It is a waveform of the pulse voltage applied to MIM. It is a schematic diagram which shows the adhesion shape of frit glass. It is an electric field strength characteristic figure to a difference in frit glass shape. It is explanatory drawing of frit glass shape dependence of electric field strength. It is a schematic diagram of the adhesion shape of the low viscosity frit glass used for the image display apparatus which is 2nd Embodiment of this invention. It is a conceptual diagram of the frit glass outflow prevention groove part used for the image display apparatus which is 4th Embodiment of this invention. It is a conceptual diagram of the groove part for other frit glass outflow prevention used for the image display apparatus which is 5th Embodiment of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Front substrate 2 Back substrate 3 Support frame 4 Spacer 5 Electron emission element 6 Image forming member 7, 8, 9 Frit glass 10 Scan line 11 Data line 12 Phosphor 13 Black matrix 14 Anode lead wire 15 Metal back (anode)
16 Conductive film 17, 18 Groove part 19 SiN film 20 Insulating AO film 21 Front panel 22 Rear panel 100 Image display device

Claims (10)

A front plate having an anode, a phosphor, and a black matrix on one side;
A back plate having a plurality of electron sources on one side and facing the front plate;
A support frame that is interposed between the one side of the front plate and the one side of the back plate and hermetically seals the outer periphery of the display area of the front plate;
A plurality of supports interposed between the front plate and the back plate;
An image display device comprising:
Adhesive members for bonding between one end surface of the support and the one surface of the front plate and between the other end surface of the support and the one surface of the back plate are bonded and fixed in a divergent shape, respectively. An image display device.   In the adhesive member, an angle formed by a surface wetted from the front plate or the back plate to the support and a surface orthogonal to the surface of the support is in a range of 45 ° to 90 °. The image display device according to claim 1, wherein   The image display device according to claim 1, wherein the adhesive member is bonded and fixed in a substantially L shape.   The image display device according to claim 1, wherein a volume resistivity of the adhesive member is lower than a volume resistivity of the support. A front plate having an anode, a phosphor, and a black matrix on one side;
A back plate having a plurality of electron sources on one side and facing the front plate;
A support frame that is interposed between the one side of the front plate and the one side of the back plate and hermetically seals the outer periphery of the display area of the front plate;
A plurality of supports interposed between the front plate and the back plate;
An image display device comprising:
At least one of the front plate and the back plate is provided with a groove portion adjacent to a bonding portion to which the support is bonded.   The image display device according to claim 5, wherein the groove portion prevents the adhesive member to be bonded from flowing out. A front plate having an anode, a phosphor, and a black matrix on one side;
A back plate having a plurality of electron sources on one side and facing the front plate;
A support frame that is interposed between the one side of the front plate and the one side of the back plate and hermetically seals the outer periphery of the display area of the front plate;
A plurality of supports interposed between the front plate and the back plate;
An image display device comprising:
An image display device, wherein the support plate is placed on the front plate and the back plate, and a curved groove portion filled with an adhesive member is formed.   8. The groove portion prevents the adhesive member that fixes the support body from flowing out, and the adhesive member wraps around each portion of the support body in the groove portion to strengthen adhesion. The image display device described. 8. The image display device according to claim 7, wherein a volume resistivity of the adhesive member is in a range of 10 ⁵ to 10 ¹² Ωcm when wetted from the groove to the support. The image display apparatus according to claim 7, wherein the adhesive member has a volume resistivity of 10 ⁷ Ωcm or less when the adhesive member is filled from the groove portion without getting wet.

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